Evaluation of LES models for flow over bluff body from engineering application perspective
S. Vengadesan,A. Nakayama +1 more
TLDR
In this article, three SGS stress closure LES models are evaluated for turbulent flow over a square cylinder and it is concluded that a one-equation model for subgrid kinetic energy is the best choice.Abstract:
Three SGS stress closure LES models are evaluated for turbulent flow over a square cylinder. Emphasis is placed on solving engineering-application-type problems on affordable computer resources and within reasonable turnaround times. Results are compared with available experimental data and previously published workshop results. Numerical strategies are kept the same for all the cases. Results are also discussed keeping in view limitations of LES methodology of modelling for practical problems and current developments. It is concluded that a one-equation model for subgrid kinetic energy is the best choice.read more
Citations
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Journal ArticleDOI
Diffuse interface method for fluid flow and heat transfer in cellular solids
J. Ettrich,Britta Nestler +1 more
TL;DR: A coupled diffuse interface lattice Boltzmann fluid flow solver and a diffuse interface heat transfer approach are combined in view of dealing with even more convoluted geometries, incorporating the dynamics of interfaces and complex multiphysics applications.
Journal ArticleDOI
An hybrid RANS/LES model for simulation of complex turbulent flow
TL;DR: In this article, a nonlinear eddy viscosity model (NLEVM) and a scalable hybrid Reynolds averaged Navier-Stokes/ large eddy simulation (RANS/LES) strategy are developed to improve the capability of the EVM to simulate complex flows.
Dissertation
Low Reynolds number heat transfer prediction employing large eddy simulation for electronics geometrics.
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Journal ArticleDOI
Hybrid LES — Review and assessment
S. Vengadesan,Perumal Nithiarasu +1 more
TL;DR: In this article, some of the issues involved in performing hybrid LES reported in the recent literature is briefly reviewed, as well as an alternative solu- tion suggested was to combine RANS and LES, which in general referred to as Hybrid LES.
Journal ArticleDOI
Improvement of effectiveness of EMHD flow separation control
Hari Sankar,A. M. Pradeep +1 more
TL;DR: In this article, the authors showed that the effectiveness of flow separation control using Electro-Magneto-Hydro-Dynamic (EMHD) method can be improved by choosing the dimensions of the actuator based on the Reynolds number and the shape of the model studied.
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